Planning to fly in the coming weeks? You may need a passport beginning Jan. 22.

That’s right. Even though we were all told the federal REAL ID cards wouldn’t be required until October 2020 — when plane passengers will eed to present either a REAL ID or a passport — that deadline may be pushed up to just 13 days from now if the Department of Homeland Security (DHS) doesn’t certify California’s REAL IDs as compliant with federal regulations or issue an extension.

The deadline for California to comply is Thursday, Jan. 10, and the government shutdown shows no signs of ending before then.

That means, people who braved lines of often six or more hours to apply for and receive their REAL ID would still have to carry a passport to fly and those who don’t have them will also need to carry a passport — even though residents were told they wouldn’t need them for another year and a half.

California had mimicked a process for verifying addresses used in Wisconsin, which has already been certified as compliant with REAL IDs. And, DHS signed off on that procedure in June. But, then in November, said it wasn’t good enough.

In response to questions about why DHS changed its mind, a spokeswoman said the agency couldn’t comment until after the government reopens.

So, where does that leave the 2.4 million California residents who’ve already received a REAL ID and everyone else with vacation plans already lined up? It’s unclear.

In a statement, DMV spokesman Armando Botello said the agency has been working for the better of a year to be deemed compliant with REAL ID requirements.

“Unfortunately, due to a lack of response on the part of the federal government with the ongoing shutdown there has been no final confirmation,” he said. “The department, along with the governor’s office liaison in Washington D.C. continues to work to get formal notification that the state has been deemed compliant.”